Influence of ageing, silver loading and type of reducing agent on the lean NOx reduction over Ag-Al2O3 catalysts
Artikel i vetenskaplig tidskrift, 2013

The influence of ageing temperature, silver loading and type of reducing agent on the lean NOx reduction over silver–alumina catalysts was investigated with n-octane and bio-diesel (NExBTL) as reducing agent. The catalysts (2 and 6 wt% Ag–Al2O3) were prepared with a sol–gel method including freeze drying and the evaluation of NOx reduction and aging were performed using a synthetic gas-flow reactor. The results indicate a relatively high NOx reduction for both reducing agents. The hydrothermally treated 6 wt% Ag–Al2O3 sample displays a maximum NOx reduction of 78 % at 350 C for n-octane as reductant and the corresponding value for NExBTL is 60 %. Furthermore, the catalysts show high durability and an increase in activity for NOx reduction after ageing at temperatures up to 650 C,with n-octane as reducing agent.

bio-diesel

Ag–alumina

n-octane

ageing

HC-SCR

Författare

Fredrik Gunnarsson

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Kompetenscentrum katalys (KCK)

Jenny-Yue Zheng

Kompetenscentrum katalys (KCK)

Chalmers, Kemi- och bioteknik

Hannes Kannisto

Kompetenscentrum katalys (KCK)

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Cid Clément

Chalmers University of Technology

Anna Maria Lindholm

Volvo

Miroslawa Milh

Volvo

Magnus Skoglundh

Kompetenscentrum katalys (KCK)

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Hanna Härelind

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Kompetenscentrum katalys (KCK)

Topics in Catalysis

1022-5528 (ISSN) 1572-9028 (eISSN)

Vol. 56 416-420

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik

Transport

Energi

Materialvetenskap

Ämneskategorier

Kemiska processer

Fundament

Grundläggande vetenskaper

DOI

10.1007/s11244-013-9989-1